15-letter words starting with I

Are you looking for 15-letter words that start with I that you can play in Scrabble? The list below contains 508 words that are fifteen letters long, starting with I.

You can also find words of different lengths that start in I by using the links below. We have words in our dictionary ranging from 2-15 letters in length.

Find more words by length

2 3 4 5 6 7 8 9 10 11 12 13 14 15
Word Points US Intl.
1 IATROGENICITIES 18
2 ICHTHYODORULITE 27
3 ICHTHYODORYLITE 30
4 ICHTHYOPHAGISTS 32
5 ICHTHYOSAURIANS 26
6 ICHTHYOSAURUSES 26
7 ICOSITETRAHEDRA 21
8 IDENTICALNESSES 18
9 IDENTIFICATIONS 21
10 IDEOGRAPHICALLY 27
11 IDIOMATICALNESS 20
12 IDIOMATICNESSES 20
13 IDIOMORPHICALLY 28
14 IDIOSYNCRATICAL 23
15 IDIOTICALNESSES 18
16 IGNOMINIOUSNESS 18
17 ILLEGALISATIONS 16
18 ILLEGALIZATIONS 25
19 ILLEGIBLENESSES 18
20 ILLEGITIMATIONS 18
21 ILLIBERALNESSES 17
22 ILLIMITABLENESS 19
23 ILLOGICALNESSES 18
24 ILLUSTRIOUSNESS 15
25 IMAGINARINESSES 18
26 IMAGINATIVENESS 21
27 IMITATIVENESSES 20
28 IMMATERIALISING 20
29 IMMATERIALITIES 19
30 IMMATERIALIZING 29
31 IMMEASURABILITY 24
32 IMMEDIATENESSES 20
33 IMMEDICABLENESS 24
34 IMMENSURABILITY 24
35 IMMERSIVENESSES 22
36 IMMISCIBILITIES 23
37 IMMISERISATIONS 19
38 IMMISERIZATIONS 28
39 IMMOBILISATIONS 21
40 IMMOBILIZATIONS 30
41 IMMORTALISATION 19
42 IMMORTALIZATION 28
43 IMMOVABLENESSES 24
44 IMMOVEABILITIES 24
45 IMMUNOASSAYABLE 24
46 IMMUNOASSAYISTS 22
47 IMMUNOBLOTTINGS 22
48 IMMUNOCHEMISTRY 29
49 IMMUNOCOMPETENT 25
50 IMMUNOCOMPLEXES 32
51 IMMUNODEFICIENT 25
52 IMMUNODIAGNOSES 21
53 IMMUNODIAGNOSIS 21
54 IMMUNODIFFUSION 26
55 IMMUNOGENETICAL 22
56 IMMUNOGENICALLY 25
57 IMMUNOGLOBULINS 22
58 IMMUNOLOGICALLY 25
59 IMMUNOMODULATOR 22
60 IMMUNOPATHOLOGY 28
61 IMMUNOREACTIONS 21
62 IMMUNOSTIMULANT 21
63 IMMUNOTHERAPIES 24
64 IMMUTABLENESSES 21
65 IMPALPABILITIES 23
66 IMPARTIALNESSES 19
67 IMPARTIBILITIES 21
68 IMPASSABILITIES 21
69 IMPASSIBILITIES 21
70 IMPASSIONEDNESS 20
71 IMPASSIVENESSES 22
72 IMPECCABILITIES 25
73 IMPECUNIOSITIES 21
74 IMPECUNIOUSNESS 21
75 IMPENETRABILITY 24
76 IMPERFECTNESSES 24
77 IMPERIOUSNESSES 19
78 IMPERISHABILITY 27
79 IMPERMEABLENESS 23
80 IMPERSCRIPTIBLE 25
81 IMPERSONALISING 20
82 IMPERSONALITIES 19
83 IMPERSONALIZING 29
84 IMPERTURBATIONS 21
85 IMPERVIABLENESS 24
86 IMPETUOUSNESSES 19
87 IMPLACABILITIES 23
88 IMPLAUSIBLENESS 21
89 IMPLEMENTATIONS 21
90 IMPLICATIVENESS 24
91 IMPOLITICNESSES 21
92 IMPONDERABILITY 25
93 IMPORTABILITIES 21
94 IMPORTUNATENESS 19
95 IMPOSSIBILITIES 21
96 IMPOSTHUMATIONS 24
97 IMPOVERISHMENTS 27
98 IMPRACTICALNESS 23
99 IMPRECISENESSES 21
100 IMPREGNABLENESS 22
101 IMPRESCRIPTIBLE 25
102 IMPRESCRIPTIBLY 28
103 IMPRESSIONISTIC 21
104 IMPROBABILITIES 23
105 IMPROVABILITIES 24
106 IMPROVISATIONAL 22
107 IMPROVISATORIAL 22
108 IMPROVISATRICES 24
109 IMPROVISATRIXES 29
110 IMPROVVISATORES 25
111 IMPROVVISATRICE 27
112 IMPULSIVENESSES 22
113 IMPUTABLENESSES 21
114 INACCESSIBILITY 24
115 INADMISSIBILITY 23
116 INADVISABLENESS 21
117 INALIENABLENESS 17
118 INALTERABLENESS 17
119 INANIMATENESSES 17
120 INAPPLICABILITY 26
121 INAPPRECIATIONS 21
122 INAPPREHENSIBLE 24
123 INAPPREHENSIONS 22
124 INAPPROPRIATELY 24
125 INARTICULATIONS 17
126 INATTENTIVENESS 18
127 INAUDIBLENESSES 18
128 INCALCULABILITY 24
129 INCANDESCENCIES 22
130 INCAPABLENESSES 21
131 INCAPACIOUSNESS 21
132 INCAPACITATIONS 21
133 INCENTIVISATION 20
134 INCENTIVIZATION 29
135 INCESSANTNESSES 17
136 INCLEMENTNESSES 19
137 INCLUSIVENESSES 20
138 INCOMMENSURABLE 23
139 INCOMMENSURABLY 26
140 INCOMMUNICATIVE 26
141 INCOMMUTABILITY 26
142 INCOMPARABILITY 26
143 INCOMPATIBILITY 26
144 INCOMPREHENSION 24
145 INCOMPREHENSIVE 27
146 INCOMPUTABILITY 26
147 INCONGRUOUSNESS 18
148 INCONSECUTIVELY 25
149 INCONSEQUENTIAL 26
150 INCONSIDERATELY 21
151 INCONSIDERATION 18
152 INCONSISTENCIES 19
153 INCONSOLABILITY 22
154 INCONSPICUOUSLY 24
155 INCONVENIENCIES 22
156 INCONVENIENCING 23
157 INCOORDINATIONS 18
158 INCORRECTNESSES 19
159 INCORRIGIBILITY 23
160 INCORRUPTNESSES 19
161 INCREDIBILITIES 20
162 INCREDULOUSNESS 18
163 INCREMENTALISMS 21
164 INCREMENTALISTS 19
165 INCROSSBREEDING 21
166 INCULPABILITIES 21
167 INCURABLENESSES 19
168 INCURIOUSNESSES 17
169 INDEFEASIBILITY 24
170 INDEFECTIBILITY 26
171 INDEFENSIBILITY 24
172 INDEFINABLENESS 21
173 INDELIBLENESSES 18
174 INDEMNIFICATION 23
175 INDETERMINACIES 20
176 INDETERMINATELY 21
177 INDETERMINATION 18
178 INDETERMINISTIC 20
179 INDIFFERENTISMS 24
180 INDIFFERENTISTS 22
181 INDIGENISATIONS 17
182 INDIGENIZATIONS 26
183 INDIGESTABILITY 22
184 INDIGESTIBILITY 22
185 INDISCIPLINABLE 22
186 INDISCRETIONARY 21
187 INDISPUTABILITY 23
188 INDISSOLUBILITY 21
189 INDISTINCTIVELY 24
190 INDISTRIBUTABLE 20
191 INDIVIDUALISERS 20
192 INDIVIDUALISING 21
193 INDIVIDUALISTIC 22
194 INDIVIDUALITIES 20
195 INDIVIDUALIZERS 29
196 INDIVIDUALIZING 30
197 INDIVISIBLENESS 21
198 INDOCTRINATIONS 18
199 INDOMITABLENESS 20
200 INDUBITABLENESS 20
201 INDUCTIVENESSES 21
202 INDUSTRIALISING 17
203 INDUSTRIALIZING 26
204 INDUSTRIOUSNESS 16
205 INEDUCABILITIES 20
206 INEFFABLENESSES 23
207 INEFFACEABILITY 28
208 INEFFECTIVENESS 26
209 INEFFECTUALNESS 23
210 INEFFICACIOUSLY 28
211 INELIGIBILITIES 18
212 INELUDIBILITIES 18
213 INEQUITABLENESS 26
214 INERADICABILITY 23
215 INERRABLENESSES 17
216 INESTIMABLENESS 19
217 INEVITABILITIES 20
218 INEXCUSABLENESS 26
219 INEXORABILITIES 24
220 INEXPENSIVENESS 27
221 INEXPLICABILITY 31
222 INEXPUGNABILITY 30
223 INEXTENSIBILITY 27
224 INEXTRICABILITY 29
225 INFALLIBILITIES 20
226 INFANTILISATION 18
227 INFANTILIZATION 27
228 INFEASIBILITIES 20
229 INFECTIVENESSES 23
230 INFINITESIMALLY 23
231 INFLAMMABLENESS 24
232 INFLECTEDNESSES 21
233 INFLEXIBILITIES 27
234 INFORMATIONALLY 23
235 INFORMATISATION 20
236 INFORMATIVENESS 23
237 INFORMATIZATION 29
238 INFRALAPSARIANS 20
239 INFRANGIBLENESS 21
240 INFRASTRUCTURAL 20
241 INFRASTRUCTURES 20
242 INFUNDIBULIFORM 26
243 INFUSIBLENESSES 20
244 INGENIOUSNESSES 16
245 INGENUOUSNESSES 16
246 INGRAINEDNESSES 17
247 INHARMONICITIES 22
248 INHERITABLENESS 20
249 INHOMOGENEITIES 21
250 INHOSPITALITIES 20
251 INIMITABILITIES 19
252 INITIALISATIONS 15
253 INITIALIZATIONS 24
254 INJUDICIOUSNESS 25
255 INJURIOUSNESSES 22
256 INNOCUOUSNESSES 17
257 INNOXIOUSNESSES 22
258 INNUMERABLENESS 19
259 INOBTRUSIVENESS 20
260 INOCULABILITIES 19
261 INODOROUSNESSES 16
262 INOFFENSIVENESS 24
263 INOFFICIOUSNESS 23
264 INOPERABILITIES 19
265 INOPERATIVENESS 20
266 INOPPORTUNENESS 19
267 INOPPORTUNITIES 19
268 INORGANISATIONS 16
269 INORGANIZATIONS 25
270 INQUISITIONISTS 24
271 INQUISITIVENESS 27
272 INQUISITORIALLY 27
273 INSATIABILITIES 17
274 INSATIATENESSES 15
275 INSCRIBABLENESS 21
276 INSCRUTABLENESS 19
277 INSENSATENESSES 15
278 INSENSIBILITIES 17
279 INSENSITIVENESS 18
280 INSENSITIVITIES 18
281 INSEPARABLENESS 19
282 INSIDIOUSNESSES 16
283 INSIGNIFICANCES 23
284 INSIGNIFICANTLY 24
285 INSIGNIFICATIVE 24
286 INSOCIABILITIES 19
287 INSOLUBLENESSES 17
288 INSOLVABILITIES 20
289 INSPIRATIONALLY 20
290 INSPIRATIONISMS 19
291 INSPIRATIONISTS 17
292 INSTANTANEITIES 15
293 INSTANTANEOUSLY 18
294 INSTINCTIVITIES 20
295 INSTITUTIONALLY 18
296 INSTRUCTIVENESS 20
297 INSTRUCTORSHIPS 22
298 INSTRUMENTALISM 19
299 INSTRUMENTALIST 17
300 INSTRUMENTALITY 20
301 INSTRUMENTATION 17
302 INSUBORDINATELY 21
303 INSUBORDINATION 18
304 INSUBSTANTIALLY 20
305 INSUFFICIENCIES 25
306 INSUPERABLENESS 19
307 INSURRECTIONARY 20
308 INSURRECTIONISM 19
309 INSURRECTIONIST 17
310 INTANGIBILITIES 18
311 INTEGRABILITIES 18
312 INTEGRATIONISTS 16
313 INTELLECTUALISE 17
314 INTELLECTUALISM 19
315 INTELLECTUALIST 17
316 INTELLECTUALITY 20
317 INTELLECTUALIZE 26
318 INTELLIGENTSIAS 16
319 INTELLIGENTZIAS 25
320 INTELLIGIBILITY 21
321 INTEMPERATENESS 19
322 INTENSIFICATION 20
323 INTENSIVENESSES 18
324 INTERACTIONISMS 19
325 INTERACTIONISTS 17
326 INTERACTIVITIES 20
327 INTERAMBULACRAL 21
328 INTERAMBULACRUM 23
329 INTERANIMATIONS 17
330 INTERBEHAVIORAL 23
331 INTERBEHAVIOURS 23
332 INTERCHANGEABLE 23
333 INTERCHANGEABLY 26
334 INTERCHANGEMENT 23
335 INTERCLAVICULAR 22
336 INTERCOLLEGIATE 18
337 INTERCOLONIALLY 20
338 INTERCOMMUNIONS 21
339 INTERCOMPARISON 21
340 INTERCONNECTING 20
341 INTERCONNECTION 19
342 INTERCONNECTORS 19
343 INTERCONNEXIONS 24
344 INTERCONVERSION 20
345 INTERCONVERTING 21
346 INTERCORRELATED 18
347 INTERCORRELATES 17
348 INTERCULTURALLY 20
349 INTERDEPENDENCE 21
350 INTERDEPENDENCY 24
351 INTERDEPENDENTS 19
352 INTERDIFFUSIONS 22
353 INTERDIGITATING 18
354 INTERDIGITATION 17
355 INTERDIVISIONAL 19
356 INTERELECTRODES 18
357 INTERELECTRONIC 19
358 INTERESTINGNESS 16
359 INTERFASCICULAR 22
360 INTERFEROMETERS 20
361 INTERFEROMETRIC 22
362 INTERFRATERNITY 21
363 INTERGENERATION 16
364 INTERGRADATIONS 17
365 INTERINDIVIDUAL 20
366 INTERINFLUENCED 21
367 INTERINFLUENCES 20
368 INTERIORISATION 15
369 INTERIORIZATION 24
370 INTERJACULATING 25
371 INTERJACULATORY 27
372 INTERJECTIONARY 27
373 INTERLACUSTRINE 17
374 INTERLAMINATING 18
375 INTERLAMINATION 17
376 INTERLINEATIONS 15
377 INTERLOCUTORILY 20
378 INTERLOCUTRICES 19
379 INTERLOCUTRIXES 24
380 INTERMEDIATIONS 18
381 INTERMIGRATIONS 18
382 INTERMINABILITY 22
383 INTERMITTENCIES 19
384 INTERMODULATION 18
385 INTERNALISATION 15
386 INTERNALIZATION 24
387 INTERNATIONALLY 18
388 INTERNUCLEOTIDE 18
389 INTEROPERATIVES 20
390 INTEROSCULATING 18
391 INTEROSCULATION 17
392 INTERPAROXYSMAL 29
393 INTERPELLATIONS 17
394 INTERPENETRABLE 19
395 INTERPENETRATED 18
396 INTERPENETRATES 17
397 INTERPERCEPTUAL 21
398 INTERPERMEATING 20
399 INTERPERSONALLY 20
400 INTERPHALANGEAL 21
401 INTERPOPULATION 19
402 INTERPRETATIONS 17
403 INTERPRETERSHIP 22
404 INTERPRETRESSES 17
405 INTERPROVINCIAL 22
406 INTERPUNCTUATED 20
407 INTERPUNCTUATES 19
408 INTERROGATINGLY 20
409 INTERROGATIONAL 16
410 INTERROGATIVELY 22
411 INTERROGATORIES 16
412 INTERROGATORILY 19
413 INTERRUPTEDNESS 18
414 INTERSCHOLASTIC 22
415 INTERSECTIONALS 17
416 INTERSEXUALISMS 24
417 INTERSTRATIFIED 19
418 INTERSTRATIFIES 18
419 INTERSUBJECTIVE 29
420 INTERTANGLEMENT 18
421 INTERTENTACULAR 17
422 INTERTEXTUALITY 25
423 INTERTWINEMENTS 20
424 INTERTWISTINGLY 22
425 INTERUNIVERSITY 21
426 INTERVALOMETERS 20
427 INTERVENTIONISM 20
428 INTERVENTIONIST 18
429 INTERVISIBILITY 23
430 INTERVISITATION 18
431 INTERWEAVEMENTS 23
432 INTOLERABLENESS 17
433 INTRACELLULARLY 20
434 INTRACEREBRALLY 22
435 INTRACTABLENESS 19
436 INTRADERMICALLY 23
437 INTRAFASCICULAR 22
438 INTRAMUSCULARLY 22
439 INTRANSIGEANCES 18
440 INTRANSIGEANTLY 19
441 INTRANSIGENCIES 18
442 INTRANSIGENTISM 18
443 INTRANSIGENTIST 16
444 INTRANSMISSIBLE 19
445 INTRAPERITONEAL 17
446 INTRAPOPULATION 19
447 INTRAPRENEURIAL 17
448 INTRAVASCULARLY 23
449 INTRICATENESSES 17
450 INTRINSICALNESS 17
451 INTROSPECTIONAL 19
452 INTROSPECTIVELY 25
453 INTROSUSCEPTION 19
454 INTRUSIVENESSES 18
455 INTUITIONALISMS 17
456 INTUITIONALISTS 15
457 INTUITIVENESSES 18
458 INTUSSUSCEPTING 20
459 INTUSSUSCEPTION 19
460 INTUSSUSCEPTIVE 22
461 INVARIABILITIES 20
462 INVECTIVENESSES 23
463 INVENDIBILITIES 21
464 INVENTIVENESSES 21
465 INVERTIBILITIES 20
466 INVESTIGATIONAL 19
467 INVIDIOUSNESSES 19
468 INVINCIBILITIES 22
469 INVIOLABILITIES 20
470 INVIOLATENESSES 18
471 INVISIBLENESSES 20
472 INVOLUNTARINESS 18
473 INVULNERABILITY 23
474 IONOSPHERICALLY 25
475 IRASCIBLENESSES 19
476 IRRATIONALISING 16
477 IRRATIONALISTIC 17
478 IRRATIONALITIES 15
479 IRRATIONALIZING 25
480 IRRECIPROCITIES 21
481 IRRECONCILABLES 21
482 IRRECONCILEMENT 21
483 IRREDEEMABILITY 23
484 IRREDUCIBLENESS 20
485 IRREDUCTIBILITY 23
486 IRREFORMABILITY 25
487 IRREFRAGABILITY 24
488 IRREFUTABLENESS 20
489 IRRELIGIOUSNESS 16
490 IRREMISSIBILITY 22
491 IRREMOVABLENESS 22
492 IRREPARABLENESS 19
493 IRREPEALABILITY 22
494 IRREPREHENSIBLE 22
495 IRREPREHENSIBLY 25
496 IRRESISTABILITY 20
497 IRRESISTIBILITY 20
498 IRRESOLVABILITY 23
499 IRRETENTIVENESS 18
500 IRREVERSIBILITY 23
501 IRREVOCABLENESS 22
502 IRRITABLENESSES 17
503 ISMATICALNESSES 19
504 ISOIMMUNISATION 19
505 ISOIMMUNIZATION 28
506 ISOPERIMETRICAL 21
507 ISOTHIOCYANATES 23
508 ITERATIVENESSES 18

Scrabble score table

The table below covers how many points each letter will give you when playing a game of Scrabble. The most common letters are worth one point, and the rarest letters are worth 8-10 points.

You can use our Scrabble tools to help you learn and remember words which contain the rare letters to make sure you get the highest score possible!

Score Letters
1 AEIOULNRST
2 DG
3 BCMP
4 FHVWY
5 K
8 JX
10 QZ

Link To or Reference This Page

We spend a lot of time collecting, cleaning, merging, and formatting the data that is shown on the site to be as useful to you as possible.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Word Squared as the source. We appreciate your support!

  • "15-letter words starting with I". WordSquared.com. Accessed on October 6, 2022. https://wordsquared.com/scrabble/fifteen-letter-words-starting-with-i/.

  • "15-letter words starting with I". WordSquared.com, https://wordsquared.com/scrabble/fifteen-letter-words-starting-with-i/. Accessed 6 October, 2022

  • 15-letter words starting with I. WordSquared.com. Retrieved from https://wordsquared.com/scrabble/fifteen-letter-words-starting-with-i/.